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发明名称
Grid structure for electron discharge devices
摘要
申请公布号
US2459859(A)
申请公布日期
1949.01.25
申请号
US19450584422
申请日期
1945.03.23
申请人
FEDERAL TELEPHONE AND RADIO CORPORATION
发明人
WESTON SIMEON
分类号
H01J19/38;H01J21/36
主分类号
H01J19/38
代理机构
代理人
主权项
地址
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